I gave a short talk at a small JavaScript study group about the strengths of ClojureScript in order to convince the audience to try it out. Event: https://it-ghost.connpass.com/event/59062/ June 24th, 2017
- The document discusses ClojureScript, a Lisp dialect that compiles to JavaScript. It provides an overview of ClojureScript's features like immutability, concurrency, and syntax extensibility through macros. It also summarizes popular ClojureScript tools like Lumo, Calvin, ShadowCLJS, and Macchiato and recommends options for getting started with ClojureScript depending on needs and preferences.
Clojure's history of web development began with using Clojure as a library for Java servlets in 2007. In 2009, Ring was introduced as a standard for request-response processing using Clojure maps and middleware. This was inspired by Rack and WSGI. Compojure provided routing capabilities. Early frameworks like Noir and Conjure bundled technologies but lacked flexibility. More recent options like Pedestal, Duct, Arachne, and Luminus integrate Clojure libraries for full-stack development with options for asynchronous processing, components, and Node.js support. The ecosystem continues to be driven by community contributions.
Create a RESTful API with NodeJS, Express and MongoDBHengki Sihombing
This document provides an overview and roadmap for creating a RESTful API using Express and MongoDB. It discusses installing Node.js, Express, MongoDB, and Mongoose. It also covers using HTTP verbs like GET, POST, PUT, and DELETE to perform CRUD operations on data stored in MongoDB via a RESTful API built with Express. Example curl commands are given to demonstrate making requests to the Express API to create, update, delete and retrieve data in a RESTful manner.
This document discusses how to create a REST API in Node.js using the Express framework and Mongoose ORM for connecting to MongoDB. It begins with an introduction and background on REST APIs and the technologies used. It then walks through setting up dependencies, creating basic Express routes, connecting to MongoDB with Mongoose, defining a schema and model, and using the model for CRUD operations. The document ends with instructions on testing API endpoints in Postman and includes a link to the source code repository.
This document discusses building scalable network applications using Node.js. It begins with an introduction to Node.js, describing it as a software platform built on the Chrome V8 engine for building scalable applications using JavaScript on the server side. It then discusses why to use Node.js, noting that its single-threaded and event-driven model avoids issues with memory usage that can occur in multi-threaded models. The document proceeds to explain event loops and non-blocking I/O in Node.js. It then provides an example of building a simple web server with Node.js. Finally, it introduces Express.js and provides an overview of how to structure an Express application using MVC patterns with models, views,
A brief overview of server side JavaScript usage focused on NodeJS.
Presented on DotNetters Tech Summit - 2015 RUET
Presenter: Md. Sohel Rana
Event Url: https://www.facebook.com/events/512834685530439/
The presentation is an overview of Node.js on how to use it in developing web apps. It also describes the pros and cons it has along with why it got so much adaption in quick time.
The document discusses building a RESTful API and deploying it to the cloud. It outlines using Node.js, Express.js, MongoDB, and other tools to build a scalable API. It then discusses deploying the application to services like Heroku and Travis CI for continuous integration and monitoring with New Relic. Case studies are provided of other companies like PayPal that were able to build applications faster and handle more traffic using similar Node.js architectures.
This document summarizes configuration management tools and introduces Ansible. It notes that Puppet and bcfg2 are pull-based with custom authentication and performance issues, while Ansible is push-based using SSH keys, fast with no daemons. Ansible can be installed with pip and used immediately in one-shot mode or with playbooks for complete configuration management. Playbooks allow defining collections of actions like one-shot mode with notifications. The document concludes that Ansible can go from zero to production in minutes with no custom setup or dependencies.
“Node's goal is to provide an easy way to build scalable Network programs”
Asynchronous i/o framework
Core in c++ on top of v8
Rest of it in javascript
Swiss army knife for network Related stuffs
Can handle thousands of Concurrent connections with Minimal overhead (cpu/memory) on a single process
It’s NOT a web framework, and it’s also NOT a language
• Created by Ryan Dahl in 2009
• Development && maintenance sponsored by Joyent
• License MIT
• Last release : 0.10.31
• Based on Google V8 Engine
• +99 000 packages
Slides from my workshop about node.js which I conducted in Girl Geek Dinner Bangalore. More details at http://sudarmuthu.com/blog/introduction-to-node-js-at-yahoo-girl-geek-dinner
This document provides an introduction to Node.js and Mongoose. It discusses that Node.js is a JavaScript runtime built on Chrome's V8 engine for building fast and scalable network applications. It then summarizes key aspects of Node.js like its architecture, core modules, use of packages, and creating simple modules. It also introduces Express as a web framework and Mongoose as an ORM for MongoDB, summarizing their basic usage and schemas.
JavaScript was created in 1995 and became a standard in 1997. Node.js was created in 2009 using Google's V8 JavaScript engine, allowing JavaScript to be used for server-side applications. Node.js is well-suited for building scalable web servers, APIs, and real-time applications due to its asynchronous, non-blocking architecture that uses callbacks and an event loop. Modules are used to add functionality to Node.js applications, and can be installed via the NPM package manager.
Node.js is an asynchronous and event-driven JavaScript runtime built on Chrome's V8 JavaScript engine. It uses an event loop to handle asynchronous I/O in a non-blocking way without threads. The event loop listens for events like file system operations or network connections and queues microtasks or callbacks for execution when the events occur. A thread pool handles I/O-bound tasks like file system operations to improve performance. This single-threaded asynchronous model improves concurrency and scalability compared to traditional threaded models.
SockJS provides a WebSocket-like API that works across all browsers, including older browsers, by using multiple transport mechanisms as needed such as xhr-polling. It supports both client-side and server-side libraries for major platforms. While SockJS mimics the WebSocket API, it is simpler than solutions like Socket.IO that provide additional functionality beyond a raw protocol.
Grunt is a JavaScript task runner that can automate repetitive tasks like minifying files, running tests, linting code, and more. It allows setting up workflows to run tasks on file changes. Common Grunt tasks for WordPress theme development include concatenating and minifying CSS and JS, running Sass/LESS compilers, and live reloading. Templates are available to generate WordPress plugin and theme projects with recommended file structures and tasks preconfigured.
[Blibli Brown Bag] Nodejs - The Other Side of JavascriptIrfan Maulana
This document provides an overview of Node.js including what it is, its key features, popular modules, when to use it and when not to use it. Node.js is a JavaScript runtime built on Chrome's V8 engine that allows JavaScript to be used on the server-side. It offers lightweight servers, near real-time speed, non-blocking I/O with event loops, large npm module ecosystem and support for isomorphic JavaScript. Popular Node.js uses include chat applications, APIs, monitoring dashboards, and server-side web applications. The document then discusses building web applications with Node.js including using Express, Mongoose, Jade and testing with Mocha.
The document summarizes the current state of JavaScript and its ecosystem. It covers JavaScript's history and evolution, an overview of the language, browser APIs and programming model, popular libraries like jQuery, MVC frameworks like Backbone, Node.js for backend development, variations like CoffeeScript, and emerging technologies on the cutting edge like ES6 and asm.js. It emphasizes that JavaScript has become the dominant language for both front-end and back-end web development.
This document provides an introduction to Node.js for beginners. It defines Node.js as a server-side JavaScript platform that uses non-blocking I/O and an event-driven architecture. It discusses key Node.js concepts like callbacks, event loops, streams, and asynchronous programming. It also highlights how Node.js is well suited for building real-time applications and APIs due to its asynchronous and modular nature.
The SPDY Protocol is likely going to be the successor of http. This short talk summarizes the most important points and includes a demo on how to migrate a Wordpress blog on httpd.
This document provides an introduction to Node.js, including:
- Node.js allows JavaScript to be run on the server-side using the V8 JavaScript engine.
- It uses an event-driven, non-blocking I/O model that makes it lightweight and efficient.
- Node.js supports module-driven development through NPM, which has over 250,000 packages available.
This slides's talking about basics of "measuring webapp" for optimization.
- Rendering, Page Loading, Script Performance and Scripting Timeline/Profiling with Chrome DevTools.
- Scripting for measuring performance using 'Navigation Timing' & 'User Timing'.
This document discusses JavaScript module systems including CommonJS, RequireJS, Browserify, ES6 modules, Webpack, and JSPM. It begins with a history of JavaScript modules and loading external scripts. It then covers CommonJS for Node.js, RequireJS for asynchronous loading in browsers, and Browserify for using CommonJS modules in browsers. ES6 modules are described as the standard module solution. Webpack is presented as a module bundler with many features. Finally, JSPM is discussed as a package manager that works with SystemJS to provide modules from npm and GitHub for both browsers and Node.js.
Node.js is well-suited for applications that require lightweight concurrency and asynchronous I/O. It uses an event-driven, non-blocking model that makes it efficient for real-time applications with high concurrency needs, such as chat, live data feeds, and web site monitoring dashboards. While Node.js performs well for lightweight operations, heavier CPU-intensive tasks may be better suited for Java/J2EE due to its multi-threading capabilities. The Node.js ecosystem is growing rapidly but still less mature than Java/J2EE's established ecosystem.
An Introduction to the world of Javascript and NodeJS. The presentation captures Javascript's history, its evolution and its progression towards a language for an end-to-end development.
This document provides information about Node.js, Express, and using Node.js with databases like MySQL. It describes Node.js as a JavaScript web framework that is fast and small. It explains that Express is a web application framework built on Node.js and Connect. It provides instructions for installing Express and a quick start guide. It also lists features of Express like routing, views, and sessions. Finally, it discusses hosting Node.js applications on platforms like Heroku and connecting Node.js to MySQL.
ClojureScript in Magento 2 - MageTitansMCR 2017vinaikopp
This document discusses using ClojureScript to build parts of Magento sites in order to avoid frustration with some of Magento's UI components. It introduces ClojureScript as a hosted LISP dialect that compiles to JavaScript and allows good interoperability with JavaScript code. The author argues that ClojureScript's features like immutability, data structures, and compiler optimizations could help developers build Magento sites more quickly and with better quality. Examples are given of how ClojureScript code interacts with JavaScript in Magento. Recommendations are made for resources to learn more about ClojureScript.
Clojure(script) allows for fast development through functional programming principles like immutable data structures and side effect isolation. It compiles to JavaScript, allowing the same codebase to run on both backend and frontend. The ecosystem includes tools like Fulcro for building single page apps, Clojurescript for compiling to JS, and libraries like Reagent that provide a React-like interface. Well designed data types and comprehensive standard library make Clojure(script) a stable and productive language.
This document summarizes configuration management tools and introduces Ansible. It notes that Puppet and bcfg2 are pull-based with custom authentication and performance issues, while Ansible is push-based using SSH keys, fast with no daemons. Ansible can be installed with pip and used immediately in one-shot mode or with playbooks for complete configuration management. Playbooks allow defining collections of actions like one-shot mode with notifications. The document concludes that Ansible can go from zero to production in minutes with no custom setup or dependencies.
“Node's goal is to provide an easy way to build scalable Network programs”
Asynchronous i/o framework
Core in c++ on top of v8
Rest of it in javascript
Swiss army knife for network Related stuffs
Can handle thousands of Concurrent connections with Minimal overhead (cpu/memory) on a single process
It’s NOT a web framework, and it’s also NOT a language
• Created by Ryan Dahl in 2009
• Development && maintenance sponsored by Joyent
• License MIT
• Last release : 0.10.31
• Based on Google V8 Engine
• +99 000 packages
Slides from my workshop about node.js which I conducted in Girl Geek Dinner Bangalore. More details at http://sudarmuthu.com/blog/introduction-to-node-js-at-yahoo-girl-geek-dinner
This document provides an introduction to Node.js and Mongoose. It discusses that Node.js is a JavaScript runtime built on Chrome's V8 engine for building fast and scalable network applications. It then summarizes key aspects of Node.js like its architecture, core modules, use of packages, and creating simple modules. It also introduces Express as a web framework and Mongoose as an ORM for MongoDB, summarizing their basic usage and schemas.
JavaScript was created in 1995 and became a standard in 1997. Node.js was created in 2009 using Google's V8 JavaScript engine, allowing JavaScript to be used for server-side applications. Node.js is well-suited for building scalable web servers, APIs, and real-time applications due to its asynchronous, non-blocking architecture that uses callbacks and an event loop. Modules are used to add functionality to Node.js applications, and can be installed via the NPM package manager.
Node.js is an asynchronous and event-driven JavaScript runtime built on Chrome's V8 JavaScript engine. It uses an event loop to handle asynchronous I/O in a non-blocking way without threads. The event loop listens for events like file system operations or network connections and queues microtasks or callbacks for execution when the events occur. A thread pool handles I/O-bound tasks like file system operations to improve performance. This single-threaded asynchronous model improves concurrency and scalability compared to traditional threaded models.
SockJS provides a WebSocket-like API that works across all browsers, including older browsers, by using multiple transport mechanisms as needed such as xhr-polling. It supports both client-side and server-side libraries for major platforms. While SockJS mimics the WebSocket API, it is simpler than solutions like Socket.IO that provide additional functionality beyond a raw protocol.
Grunt is a JavaScript task runner that can automate repetitive tasks like minifying files, running tests, linting code, and more. It allows setting up workflows to run tasks on file changes. Common Grunt tasks for WordPress theme development include concatenating and minifying CSS and JS, running Sass/LESS compilers, and live reloading. Templates are available to generate WordPress plugin and theme projects with recommended file structures and tasks preconfigured.
[Blibli Brown Bag] Nodejs - The Other Side of JavascriptIrfan Maulana
This document provides an overview of Node.js including what it is, its key features, popular modules, when to use it and when not to use it. Node.js is a JavaScript runtime built on Chrome's V8 engine that allows JavaScript to be used on the server-side. It offers lightweight servers, near real-time speed, non-blocking I/O with event loops, large npm module ecosystem and support for isomorphic JavaScript. Popular Node.js uses include chat applications, APIs, monitoring dashboards, and server-side web applications. The document then discusses building web applications with Node.js including using Express, Mongoose, Jade and testing with Mocha.
The document summarizes the current state of JavaScript and its ecosystem. It covers JavaScript's history and evolution, an overview of the language, browser APIs and programming model, popular libraries like jQuery, MVC frameworks like Backbone, Node.js for backend development, variations like CoffeeScript, and emerging technologies on the cutting edge like ES6 and asm.js. It emphasizes that JavaScript has become the dominant language for both front-end and back-end web development.
This document provides an introduction to Node.js for beginners. It defines Node.js as a server-side JavaScript platform that uses non-blocking I/O and an event-driven architecture. It discusses key Node.js concepts like callbacks, event loops, streams, and asynchronous programming. It also highlights how Node.js is well suited for building real-time applications and APIs due to its asynchronous and modular nature.
The SPDY Protocol is likely going to be the successor of http. This short talk summarizes the most important points and includes a demo on how to migrate a Wordpress blog on httpd.
This document provides an introduction to Node.js, including:
- Node.js allows JavaScript to be run on the server-side using the V8 JavaScript engine.
- It uses an event-driven, non-blocking I/O model that makes it lightweight and efficient.
- Node.js supports module-driven development through NPM, which has over 250,000 packages available.
This slides's talking about basics of "measuring webapp" for optimization.
- Rendering, Page Loading, Script Performance and Scripting Timeline/Profiling with Chrome DevTools.
- Scripting for measuring performance using 'Navigation Timing' & 'User Timing'.
This document discusses JavaScript module systems including CommonJS, RequireJS, Browserify, ES6 modules, Webpack, and JSPM. It begins with a history of JavaScript modules and loading external scripts. It then covers CommonJS for Node.js, RequireJS for asynchronous loading in browsers, and Browserify for using CommonJS modules in browsers. ES6 modules are described as the standard module solution. Webpack is presented as a module bundler with many features. Finally, JSPM is discussed as a package manager that works with SystemJS to provide modules from npm and GitHub for both browsers and Node.js.
Node.js is well-suited for applications that require lightweight concurrency and asynchronous I/O. It uses an event-driven, non-blocking model that makes it efficient for real-time applications with high concurrency needs, such as chat, live data feeds, and web site monitoring dashboards. While Node.js performs well for lightweight operations, heavier CPU-intensive tasks may be better suited for Java/J2EE due to its multi-threading capabilities. The Node.js ecosystem is growing rapidly but still less mature than Java/J2EE's established ecosystem.
An Introduction to the world of Javascript and NodeJS. The presentation captures Javascript's history, its evolution and its progression towards a language for an end-to-end development.
This document provides information about Node.js, Express, and using Node.js with databases like MySQL. It describes Node.js as a JavaScript web framework that is fast and small. It explains that Express is a web application framework built on Node.js and Connect. It provides instructions for installing Express and a quick start guide. It also lists features of Express like routing, views, and sessions. Finally, it discusses hosting Node.js applications on platforms like Heroku and connecting Node.js to MySQL.
ClojureScript in Magento 2 - MageTitansMCR 2017vinaikopp
This document discusses using ClojureScript to build parts of Magento sites in order to avoid frustration with some of Magento's UI components. It introduces ClojureScript as a hosted LISP dialect that compiles to JavaScript and allows good interoperability with JavaScript code. The author argues that ClojureScript's features like immutability, data structures, and compiler optimizations could help developers build Magento sites more quickly and with better quality. Examples are given of how ClojureScript code interacts with JavaScript in Magento. Recommendations are made for resources to learn more about ClojureScript.
Clojure(script) allows for fast development through functional programming principles like immutable data structures and side effect isolation. It compiles to JavaScript, allowing the same codebase to run on both backend and frontend. The ecosystem includes tools like Fulcro for building single page apps, Clojurescript for compiling to JS, and libraries like Reagent that provide a React-like interface. Well designed data types and comprehensive standard library make Clojure(script) a stable and productive language.
This document provides an overview of the Clojure programming language. It discusses that Clojure is a hosted language that runs on the JVM, CLR and JavaScript runtime. It is a functional, immutable and concurrent language. Clojure allows easy interoperability with Java libraries and supports parallel processing. As a Lisp dialect, Clojure code has homoiconic properties where code is represented as data. This overview introduces Clojure concepts like atoms, refs, agents and STM for concurrency. It also discusses Clojure development tools and resources for learning Clojure.
Getting started with Emscripten – Transpiling C / C++ to JavaScript / HTML5David Voyles
The video for this talk can be found here:https://channel9.msdn.com/Blogs/raw-tech/Getting-started-with-Emscripten--Transpiling-C--C-to-JavaScript--HTML5
I cover how to transpile code from C/C++ to HTML5/JS using Emscripten, an open source compiler tool from Mozilla and Alon Zakai.
Progscon 2017: Taming the wild fronteer - Adventures in ClojurescriptJohn Stevenson
This document provides an overview of Clojurescript presented by John Stevenson. It discusses how Clojurescript provides a pragmatic approach to functional programming using immutable data structures and pure functions. It also describes how Clojurescript interfaces with popular JavaScript frameworks like React and how it can help manage complexity and state changes in web applications. Additionally, the document provides examples of Clojurescript libraries and tools and discusses ways to get started with the Clojurescript environment and ecosystem.
WebGL games with Minko - Next Game Frontier 2014Minko3D
- Minko is a framework for building 3D applications in C++ that can be deployed to desktops, mobiles, and the web.
- It uses C++ as its core language and Lua for scripting. Applications are compiled to JavaScript using Emscripten to run in HTML5 and WebGL.
- Minko provides 3D graphics and physics engines, file format support, and tools to develop once and deploy everywhere. This allows building complex 3D games and experiences that achieve high performance across platforms.
Esbuild is an extremely fast JavaScript bundler. It works as both a compiler and transpiler, taking JavaScript source code as input and producing bundled output files. Traditionally, JavaScript modules had issues with installability, being scoped, and importability between modules. This led the JavaScript community to develop solutions like CommonJS, namespaces, module wrapping, and bundlers like Browserify, Webpack, Rollup, and Esbuild which address these issues by allowing code reuse through imports and exports. Esbuild is highlighted as a very fast bundler due to benchmark tests showing its faster performance compared to alternatives. The presentation demonstrates how to use Esbuild to bundle JavaScript code.
This talk was given in ilJUG on the 29th of July 2014 and discusses the new Java8 StampedLock class. It compares it to different locking mechanism is Java and shows some insights deduced from a simple benchmark
This document discusses Clojure, an immutable, functional programming language that runs on the JVM. It provides an overview of Clojure basics like its syntax, data structures, concurrency features and macros. It then discusses how Clojure is used in practice, including common tools, frameworks and patterns for web development, testing, persistence and more. Real-world examples are given throughout.
DCSF19 Docker Containers & Java: What I Wish I Had Been ToldDocker, Inc.
Mohammed Aboullaite, xHub
Nowadays, containers are more than a cool new tool to play with - they've revolutionized the way we develop, architect and ship software and have become part of our day-to-day operations. On the other hand, Java has been around for more than 2 decades, dominating the entreprise world. Both advocate the "RUN anywhere" principal, but, is it that easy? No! Your perfect working local container will most probably fail on production because of MEMORY &/or CPU issues, since jvm apps assume they OWN the server they are running on.
This session will look at the gotchas of running JVM apps in containers & how to avoid costly pitfalls. We will cover:
_ what updates Java 10 brought to the table to improve container awareness and the issues related to prior versions, including how to address each one of them to avoid the mess.
- tips and tricks to obtain smaller images & best practices while writing your DockerFiles
- some plugins to helps non-containers experts integrate docker in their development process; and
- the concept of "Distroless" Docker Images and how to benefit from it.
This document discusses using Lua in games. It provides an overview of Lua, including its benefits like being lightweight, portable, and easy to embed. It describes common models for integrating Lua into a game's core engine, including using Lua for config files, game logic, and controlling the core engine flow. It also discusses approaches for securing Lua code, such as compiling it to bytecode or encrypting it. Finally, it notes some disadvantages of Lua like low-level C APIs and difficulties debugging and reloading code at runtime.
From development environments to production deployments with Docker, Compose,...Jérôme Petazzoni
In this session, we will learn how to define and run multi-container applications with Docker Compose. Then, we will show how to deploy and scale them seamlessly to a cluster with Docker Swarm; and how Amazon EC2 Container Service (ECS) eliminates the need to install,operate, and scale your own cluster management infrastructure. We will also walk through some best practice patterns used by customers for running their microservices platforms or batch jobs. Sample code and Compose templates will be provided on GitHub afterwards.
This document discusses using Lua in games. It provides an overview of Lua, including its benefits like being lightweight, portable, and easy to embed. It describes common models for integrating Lua into a game's core engine, including using Lua for config files, game logic, and controlling the core engine flow. It also discusses securing Lua code through compiling it to bytecode or encrypting it. Finally, it notes some disadvantages of Lua like low-level C APIs and difficulties debugging and reloading code at runtime.
Docker is an open platform for developers and system administrators to build, ship and run distributed applications. Using Docker, companies in Jordan have been able to build powerful system architectures that allow speeding up delivery, easing deployment processes and at the same time cutting major hosting costs.
Osama Jaber shares his experience at ArabiaWeather in how they moved away from AWS to a highly-redundant, high-performance and low-cost solution using docker and other open-source technologies.
This document summarizes Modern ClojureScript and provides an overview of ClojureScript features. It discusses what ClojureScript is, why Clojure and JavaScript were chosen, data types, functions, macros, immutability, laziness, interactive development with REPL, core.async for concurrency, interoperability with JavaScript, Google Closure Tools, libraries like Figwheel and Devcards, shadow-cljs, and interfaces to React like Om, Reagent and Rum. It also briefly mentions desktop, mobile, Lumo and Planck.
JavaScript is great, but let's face it, being stuck with just JavaScript in the browser is no fun.
Why not write and run Ruby in the browser, on the client, and on the server as part of your next web application?
This document discusses functional programming with Clojure. It explains why functional programming aims to eliminate side effects by making functions pure. Clojure allows for functional programming through features like immutable persistent data structures, higher order functions, recursion with tail call optimization, and lazy evaluation. Concurrency in Clojure is easier due to immutability, persistent data structures, and software transactional memory. The document provides examples of building web applications in Clojure using Ring, Compojure, and Hiccup. It also discusses building client-side apps with ClojureScript. Resources for learning Clojure like books, websites, and communities are mentioned.
- clj is a command line tool for managing Clojure projects and dependencies without requiring Leiningen. It uses a deps.edn file to specify dependencies.
- Problems with current dependency approaches include breaking changes, namespace conflicts from multiple versions, and lack of support for Git dependencies.
- deps.edn allows specifying local directories and Git repositories as dependencies, making multi-repo development easier without artifact deployment.
- clj has advantages over Leiningen for new projects but Leiningen is still useful for publishing libraries to Clojars. Migrating existing projects to clj may be worth considering.
I gave a talk about an excellent Clojure/ClojureScript rule engine library at Ichigaya Geek Night September 22 2017. https://ichigayageek.connpass.com/event/65356/
I gave a lightning talk at https://nishi-shinju-clojure.connpass.com/event/52434/ pertaining to Shift_JIS encoding in Clojure libraries out there.
I gave a talk about a Clojure library called formative, which makes life better when you have to deal with web forms. These are the slides. Presentation was done in Japanese at the Lisp meetup #49 https://lisp.connpass.com/event/50148/
This document provides instructions for setting up Redmine, an open source project management tool, on an Amazon Linux EC2 instance. It includes steps to install Apache, Ruby, MySQL, Redmine and its dependencies using yum. It also covers configuring MySQL for UTF-8, creating a Redmine database and user, installing the Redmine code, configuring the database.yml file, initializing the database, and installing Passenger to run Redmine under Apache. Finally, it provides the default Redmine login credentials.
Summarized casual ethics considerations that are required for the Japanese Professional Engineering Examination. (技術士一次試験)
It covers basic principles and thought provoking examples (classic and recent)
Ikuru K made their first pull request to contribute a patch allowing software rendering of an OpenGL demo program on machines with Mesa 10.3.2. They cloned the repo, found it did not run, raised an issue on GitHub, got a reply, tested a suggested fix, then submitted a pull request with two commits - one to set an environment variable and another to update the README. The maintainer asked them to squash the commits together which they did by merging and pushing to their branch, and their contribution was merged.
The document discusses the PyUnit testing framework in Python. It explains that test cases are classes that inherit from TestCase and contain methods starting with "test". Files containing test cases can be named anything but should end in "_test.py". The unittest module is bundled with Python and does not have external dependencies. To run tests, place test files in a directory and use a test runner to execute the tests and produce an aggregated results report. The coverage package can also be used to analyze test coverage across files.
Ikuru K reviewed their life from June 2014 through June 2015, noting several milestones: they graduated college with honors in robotics engineering, got their first job at TCS Japan working in an airline migration project, learned basic web and Python skills, and acquired their FE and AP certifications. For future goals from June 2015 to June 2016, Ikuru aims to master the Spring framework, learn Clojure and contribute to open source projects, and obtain higher-level certifications in embedded systems, networking, and information security while working to improve weaknesses in personality like public speaking ability and laziness.
Note to self on some potentially useful vim tricks.
Please do not that this is a constant wip, so if there is anything cool, please share or give me pointers!
The document summarizes the key components and basic instructions of a processor. It discusses the physical components like RAM, registers, ALU, and bus. It explains that a processor works as a finite state machine where the next state is a function of the current state and input. The basic instructions covered are load, write, arithmetic operations, compare, and jump. An example assembly program is provided to illustrate printing a character a given number of times using these instructions on an online assembler simulator.
This document provides an overview of computer hardware, networking concepts, and signs of hardware failure. It discusses that hardware underlies the programs we run and is governed by a clock speed. When suspecting hardware failure, check for unusual heat, inconsistent program behavior with same inputs, and issues with power or grounding. It also defines common networking terms like MAC addresses, which identify devices on a network, IP addresses for global and private networks, and DNS for mapping URLs to IP addresses. The document concludes by noting no single entity owns the internet and lists some incorrect guesses of potential owners.
Installing Japanese environment(mozc) on Debian 8 + Mate Ikuru Kanuma
This document provides instructions for setting up a Japanese environment in Debian Jessie with the Mate desktop environment. It outlines installing the Mozc Japanese input software from backports since it is not in the default packages, and configuring Ibus to add Mozc as an input method. Finally, it confirms the setup works in applications like Uxterm.
This document provides an overview of Git and version control systems, including:
- A brief history of Git and how it was created by Linux's original author to be distributed and scale with large projects.
- Explanations of common Git terms and commands like checkout/branch, commit, push, pull, and how the Git repository, index, and workspace interact.
- Instructions for getting Git set up on different operating systems and making the first commit to a new Git project locally or connecting it to a remote repository like GitHub.
SOAP UI is a tool used to generate mock web services from a WSDL file for testing client applications before the actual web service is available. It allows you to obtain a WSDL, create a SOAP UI project, generate mock services, test queries, and configure mock service responses. You can start by getting the WSDL for a sample weather web service, generate a mock service, start the mock service to test requests, and configure responses by populating values or adding logic.
Why Orangescrum Is a Game Changer for Construction Companies in 2025Orangescrum
Orangescrum revolutionizes construction project management in 2025 with real-time collaboration, resource planning, task tracking, and workflow automation, boosting efficiency, transparency, and on-time project delivery.
WinRAR Crack for Windows (100% Working 2025)sh607827
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Adobe Illustrator is a powerful, professional-grade vector graphics software used for creating a wide range of designs, including logos, icons, illustrations, and more. Unlike raster graphics (like photos), which are made of pixels, vector graphics in Illustrator are defined by mathematical equations, allowing them to be scaled up or down infinitely without losing quality.
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Exceptional Behaviors: How Frequently Are They Tested? (AST 2025)Andre Hora
Exceptions allow developers to handle error cases expected to occur infrequently. Ideally, good test suites should test both normal and exceptional behaviors to catch more bugs and avoid regressions. While current research analyzes exceptions that propagate to tests, it does not explore other exceptions that do not reach the tests. In this paper, we provide an empirical study to explore how frequently exceptional behaviors are tested in real-world systems. We consider both exceptions that propagate to tests and the ones that do not reach the tests. For this purpose, we run an instrumented version of test suites, monitor their execution, and collect information about the exceptions raised at runtime. We analyze the test suites of 25 Python systems, covering 5,372 executed methods, 17.9M calls, and 1.4M raised exceptions. We find that 21.4% of the executed methods do raise exceptions at runtime. In methods that raise exceptions, on the median, 1 in 10 calls exercise exceptional behaviors. Close to 80% of the methods that raise exceptions do so infrequently, but about 20% raise exceptions more frequently. Finally, we provide implications for researchers and practitioners. We suggest developing novel tools to support exercising exceptional behaviors and refactoring expensive try/except blocks. We also call attention to the fact that exception-raising behaviors are not necessarily “abnormal” or rare.
What Do Contribution Guidelines Say About Software Testing? (MSR 2025)Andre Hora
Software testing plays a crucial role in the contribution process of open-source projects. For example, contributions introducing new features are expected to include tests, and contributions with tests are more likely to be accepted. Although most real-world projects require contributors to write tests, the specific testing practices communicated to contributors remain unclear. In this paper, we present an empirical study to understand better how software testing is approached in contribution guidelines. We analyze the guidelines of 200 Python and JavaScript open-source software projects. We find that 78% of the projects include some form of test documentation for contributors. Test documentation is located in multiple sources, including CONTRIBUTING files (58%), external documentation (24%), and README files (8%). Furthermore, test documentation commonly explains how to run tests (83.5%), but less often provides guidance on how to write tests (37%). It frequently covers unit tests (71%), but rarely addresses integration (20.5%) and end-to-end tests (15.5%). Other key testing aspects are also less frequently discussed: test coverage (25.5%) and mocking (9.5%). We conclude by discussing implications and future research.
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The two main methods for installing standalone licenses of SOLIDWORKS are clean installation and parallel installation (the process is different ...
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Scaling GraphRAG: Efficient Knowledge Retrieval for Enterprise AIdanshalev
If we were building a GenAI stack today, we'd start with one question: Can your retrieval system handle multi-hop logic?
Trick question, b/c most can’t. They treat retrieval as nearest-neighbor search.
Today, we discussed scaling #GraphRAG at AWS DevOps Day, and the takeaway is clear: VectorRAG is naive, lacks domain awareness, and can’t handle full dataset retrieval.
GraphRAG builds a knowledge graph from source documents, allowing for a deeper understanding of the data + higher accuracy.
Who Watches the Watchmen (SciFiDevCon 2025)Allon Mureinik
Tests, especially unit tests, are the developers’ superheroes. They allow us to mess around with our code and keep us safe.
We often trust them with the safety of our codebase, but how do we know that we should? How do we know that this trust is well-deserved?
Enter mutation testing – by intentionally injecting harmful mutations into our code and seeing if they are caught by the tests, we can evaluate the quality of the safety net they provide. By watching the watchmen, we can make sure our tests really protect us, and we aren’t just green-washing our IDEs to a false sense of security.
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Mastering Fluent Bit: Ultimate Guide to Integrating Telemetry Pipelines with ...Eric D. Schabell
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7. Strength: Google Closure Library
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- unused stuff gets removed by Closure Compiler (later)
- Lot of good stuff
- Dom
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- Crypto
- UI Components
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8. Strength: Google Closure Compiler (advanced mode)
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18. Resources
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- Developing ClojureScript with Figwheel
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19. Problems
- ‘Emacs harassment’
- First class dev experience coupled with good editor
integration
- Alternatives are growing, but still a challenge for a
newbie to learn the language+editor integration
- Integration with external libs
- Workaround with externs/Type inference
- cljsjs
- Situation getting much better these days